n.环形物
The contract is annul by the court. 合同被法院废止。
The con - track be annul by the court . 法庭宣布该项合同无效。
Annul the previously transmitted clearance. 取消先前发给的许可。
To annul or make void;invalidate. 使废除或使无效；使作废
As you estimate, what's your biggest annul turover? 据你估计，你能完成的最大年销售量是多少呢？
n.管子；中空
